Placeholder Controls rendering links to transparent.jpg

The SingleImagePlaceholderControl and SingleAttachmentPlaceholderControl have a small bug: they render a link to an image named transparent.jpg in the current directory.

As this is only a cosmetic bug that causes 404 errors in the IIS log this bug will not be fixed in a hotfix. As this is still an anoying problem for some users I have implemented two custom placeholder controls derived from the original placeholder controls which fix the problem.

might be a solution. In my templates I had a couple of postbacks and here the path also changed to the template project with template file format. So you would have to place it at least into two locations.